Description
Unit Mini PDM is a digital MEMS silicon microphone based on PDM (Pulse Density Modulation) signals. It features high signal-to-noise ratio, high sensitivity, low power consumption, strong RF interference immunity, and smooth frequency response. The microphone automatically switches states (power-off / active / sleep) according to the clock frequency, making it suitable for audio data acquisition in wearable devices and smart digital devices.
Features
- PDM signal output (CLK/DAT)
- High sensitivity and high signal-to-noise ratio
- Low power consumption
- Strong RF interference immunity
- LEGO-compatible
Includes
- 1 x Unit Mini PDM
- 1 x HY2.0-4P Grove Cable (5cm)
Applications
- Spectrum analyzer
- Audio recording
- Sound level meter
Specifications
| Specification | Parameter |
|---|---|
| Digital Mic | SPM1423 |
| Sensitivity | 94dB SPL@1KHz Typical: -22dBFS |
| SNR | 94dB SPL@1KHz, A-weighted Typical: 61.4dB |
| THD | 100dB SPL@1KHz Typical: 1% |
| Operating Current | 600µA |
| Enclosure Material | Plastic (PC) |
| Product Size | 24.0 x 24.0 x 13.0mm |
| Product Weight | 4.0g |
| Package Size | 138.0 x 93.0 x 7.0mm |
| Gross Weight | 8.0g |